Questions

A.R. Rahman making the anthem for upcoming Hockey World Cup 2018's prime video.

Capital budgeting is the process by which a company or an industry determines whether projects such as investing in R&D, opening a new branch, replacing a machine are worth pursuing. A project is worth pursuing if it increases the value of the company. Capital budgeting also known as investment appraisal. 

It is primarily concerned with evaluating investment alternatives.

Foreign keys are the columns of a table that points to the primary key of another table. They act as a cross-reference between tables.

In detail : A Foreign key is a field (or collection of fields) in one table that uniquely identifies a row of another table or the same table. In simpler words, the foreign key is defined in a second table, but it refers to the primary key or a unique key in the first table.